telegraph
electrical impulses
hormonal
proteins
prison cells
muscle cells
glial cells
stem cells
1 foot per second
150 meters per second
1 meter per second
100 miles per hour
True or False: Damage to your nervous system can cause paralysis.
the brain
wire
muscle
nerve
they do not have a nucleus
they regenerate very quickly
they help carry oxygen to different parts of your body
they are very long compared to other cells in the body
pyramidal neurons
bipolar neurons
multipolar neurons
Purkinje neurons
liver cells
skin cells
brains
spinal cord
a nerve
all of the above
1 year
100 years
10 years
1 month